The world of Yellowstone is expanding with a new spinoff series, Y: Marshals, bringing back familiar faces and introducing new ones. The show follows Luke Grimes as he reprises his role as Kayce Dutton, leaving the ranch behind for a new life in law enforcement. Here is a complete guide to the cast and characters of the upcoming series.
The Story of Y: Marshals
Y: Marshals picks up after the events of Yellowstone, with ex-Navy SEAL Kayce Dutton leaving the Yellowstone Ranch behind. He joins an elite unit of the U.S. Marshals in Montana, using his unique combination of cowboy upbringing and military skills to fight crime. The series will explore Kayce’s journey as he balances his new duties with family ties and the psychological challenges of his work. The show is set to premiere on Sunday, March 1, 2026, at 8 PM ET on CBS, with episodes available for streaming on Paramount+ the next day.
Returning Yellowstone Cast Members
Fans of the original series will be glad to see several key characters returning to the screen.
Luke Grimes as Kayce Dutton
Luke Grimes returns as the central character, Kayce Dutton. In Y: Marshals, Kayce is a former U.S. Navy SEAL and rancher who is “changing paths, trying to find a new beginning”. He joins a specialized U.S. Marshals unit, applying his unique skills to bring justice to Montana. The series will delve into his past trauma and his efforts to build a new life away from the ranch.
Gil Birmingham as Thomas Rainwater
Gil Birmingham reprises his role as Thomas Rainwater, the Tribal Chairman of the Confederated Tribes of Broken Rock. His character has been a significant figure in the Yellowstone narrative, often navigating a complex relationship with the Dutton family. His return suggests his story will continue to intertwine with Kayce’s new path.
Brecken Merrill as Tate Dutton
Brecken Merrill returns as Tate Dutton, the son of Kayce and Monica Dutton. Tate’s presence in the series will add emotional layers to Kayce’s story, exploring their father-son bond as Kayce navigates the dangers of his new profession.
Mo Brings Plenty as Mo
Mo Brings Plenty is back as Mo, the trusted driver and enforcer for Thomas Rainwater. His character has been a steady and formidable presence in the original series, and his return provides a strong link to the established world of Yellowstone.
New Characters Joining the Series
The spinoff introduces a new ensemble of characters who will be part of Kayce’s professional and personal life.
Logan Marshall-Green as Pete Calvin
Logan Marshall-Green joins the cast as Pete Calvin, an old friend of Kayce from their time serving together as Navy SEALs. Pete understands Kayce’s military past and becomes his closest ally within the Marshals unit.
Arielle Kebbel as Belle
Arielle Kebbel plays Belle, a member of the U.S. Marshals unit in Montana. She is part of Kayce’s new team in the field and is set to become a central part of the narrative, providing moral support.
Ash Santos as Andrea
Ash Santos portrays Andrea, another Marshal within the unit. Her character is part of the diverse team that the show will focus on, highlighting the camaraderie and conflicts within the group.
Tatanka Means as Miles
Tatanka Means appears as Miles, a U.S. Marshal based in the unit’s office. His role adds to the dynamic of the team Kayce joins.
Brett Cullen as Harry Gifford
Brett Cullen plays Harry Gifford, the head of the U.S. Marshals unit in Montana. As Kayce’s new boss, his leadership and decisions will directly impact Kayce’s work and create new dramatic tension.
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A Notable Absence from the Cast
One character conspicuously missing from the confirmed cast list is Kelsey Asbille, who played Kayce’s wife, Monica Dutton, in Yellowstone. Her absence is a significant story point that the new series will likely need to address. In the first teaser for the show, Kayce is seen wearing a wedding ring, leaving fans to wonder about Monica’s fate.
Behind the Scenes
Y: Marshals is created by Taylor Sheridan, who also serves as an executive producer. Spencer Hudnut acts as the showrunner and executive producer. The series is produced by Paramount Television Studios and 101 Studios, with a reported production budget of $52 million. Filming began in late 2025 in Summit County, Utah, where the first three seasons of Yellowstone were also shot.
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